Micro quiz 7 Flashcards
first Agent used for syphilis
arsephenamine
first antibiotic used
penicillin
what is augmentin?
used to treat Neisseria gonarrheae that has become resistant to betalactams
-beta lactam +calvulinic acid
effects 30s ribosome (translation)
Aminoglycoside
effects 50s ribosome (translation)
macrolides
binds to 30s ribosome(animal feeds)
tetracycline
inhibits DNA gyrase (replication)
Quinolones/fluorquinolones
polypeptide that interfers with cell wall synth.
Bacitracin
polypeptide that destroys permeability of gram - membranes
polymyxin B
what organism can grow at refrigeration temps?
and Is environmental
listeria monocytogenes
two types of food poisioning?
- food-born infections
- food-born toxins
examples of food-born toxins
Botulism
S.aureus toxin
toxin that is heat stable(100 for 30-700 min)
S. aureus toxin
what are the quantitation methods for food bacteria?
- direct plate counts
- enrichment techniques
- most probable number (MPN) of coliforms and fecal coliorms
Tetrahionate and selenite F broth are used for?
-enrichment for salmonella and shigella
how can we change our normal flora?
antibiotics use
change in diet
meater have more___ than vegetarians
bacteriodes
gram___ are common on skin
positive cocci
gram positive cocci on the skin
Micrococcus spp.
staphylococcus spp.
propionibacterium acnes
T or F
all Spp. of Strep are considered a pathogen
T
grouping system used to distinguish beta hemolytic strep based on polysaccharides
Lancefield groupings
demineralization of teeth?
what test is used to determine your susceptibility for cavites?
- dental caries
- Snyder test
what organism is detected using the Snyder test and causes dental caries?
how does it do it?
Strep. mutans
produces acid from breaking down sucrose to glucose.
pockets between gums?
allows growth of anaerobes
periodontitis
